:root{
  --bg:#f5f7f8; --card:#fff; --ink:#172027; --muted:#66727c; --line:#dce2e7;
  --accent:#175f8d; --accent2:#eaf3f8; --good:#24714f; --warn:#95641f; --bad:#963f3f;
  --shadow:0 10px 30px rgba(21,36,48,.07); --r:19px;
}
*{box-sizing:border-box} html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.5 Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif}
button,input,select,textarea{font:inherit} button{cursor:pointer}
.shell{min-height:100vh;display:grid;grid-template-columns:244px 1fr}
aside{position:sticky;top:0;height:100vh;background:#111922;color:#eef3f6;padding:24px 17px}
.brand{font-size:25px;font-weight:900;letter-spacing:-.04em}.tag{font-size:12px;color:#9eacb9;margin:2px 0 24px}
nav{display:grid;gap:7px} nav button{border:0;background:transparent;color:#cfd8df;text-align:left;padding:10px 12px;border-radius:11px}
nav button.on,nav button:hover{background:#22303c;color:white}
.status{position:absolute;left:17px;right:17px;bottom:20px;border-top:1px solid #293844;padding-top:13px;font-size:12px;color:#aab6c0}
.dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:#88939d;margin-right:6px}.dot.yes{background:#4caf7a}.dot.no{background:#d2a13f}
main{padding:32px}.screen{display:none;max-width:1000px;margin:auto}.screen.on{display:block}
.eyebrow{text-transform:uppercase;letter-spacing:.11em;font-size:12px;font-weight:900;color:var(--accent);margin-bottom:7px}
h1{font-size:37px;line-height:1.08;letter-spacing:-.04em;margin:0 0 12px}h2{font-size:24px;letter-spacing:-.025em;margin:0 0 11px}h3{font-size:18px;margin:0 0 8px}
.lead{font-size:18px;color:var(--muted);max-width:780px;margin:0 0 23px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:21px;box-shadow:var(--shadow)}
.grid{display:grid;gap:17px}.two{grid-template-columns:1.15fr .85fr}.three{grid-template-columns:repeat(3,1fr)}
.btn{border:0;border-radius:13px;padding:12px 15px;font-weight:850}.primary{background:var(--accent);color:white}.secondary{background:#e9eef2;color:#172027}.ghost{background:white;border:1px solid var(--line)}.full{width:100%}
.actions{display:flex;gap:9px;flex-wrap:wrap;margin-top:16px}
.small{font-size:13px;color:var(--muted)}.tiny{font-size:12px;color:var(--muted)}
.pill{display:inline-block;background:var(--accent2);color:var(--accent);border-radius:999px;padding:6px 9px;font-size:12px;font-weight:800;margin-right:5px}
.helper{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin-top:17px}.helper button{background:#fff;border:1px solid var(--line);padding:10px;border-radius:12px;font-size:12px;font-weight:850}
.mission-title{font-size:30px;font-weight:900;letter-spacing:-.035em;margin:5px 0 13px}
label{display:block;font-weight:800;margin:11px 0 5px}input,select,textarea{width:100%;border:1px solid #cbd3da;border-radius:12px;padding:11px 12px;background:white}
textarea{min-height:115px;resize:vertical}.upload{border:2px dashed #bdc8d1;background:#fafcfd;text-align:center;padding:28px;border-radius:16px}
.callout{border-left:5px solid var(--accent);background:#f8fbfd}.warn{border-left:5px solid var(--warn);background:#fdfaf5}.good{border-left:5px solid var(--good);background:#f6fbf8}
.list{display:grid;gap:9px}.item{background:#f6f8f9;border-radius:12px;padding:11px 13px}.item b{display:block}
.step{display:flex;gap:11px;align-items:flex-start}.num{width:27px;height:27px;border-radius:50%;background:#e7edf1;display:flex;align-items:center;justify-content:center;flex:none;font-weight:900}.step.active .num{background:var(--accent);color:#fff}
.kicker{font-size:12px;font-weight:900;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.focus{max-width:720px;margin:28px auto;text-align:center}.focus .card{padding:38px 30px}.focus h1{font-size:43px}.focus-task{font-size:22px;font-weight:900;margin:20px 0}.timer{font-size:48px;font-variant-numeric:tabular-nums;font-weight:900}
.question{font-size:21px;font-weight:800}.feedback{margin-top:14px;padding:15px;border-radius:13px;background:#f5f7f8}
.hidden{display:none!important}.bar{height:9px;border-radius:999px;overflow:hidden;background:#e6eaed}.bar>div{height:100%;background:var(--accent)}
.master-row{display:grid;grid-template-columns:170px 1fr 110px;gap:13px;padding:12px 0;border-bottom:1px solid var(--line);align-items:center}.master-row:last-child{border:0}
.badge{display:inline-block;background:#edf1f4;padding:5px 8px;border-radius:999px;font-size:12px;font-weight:850}
.toast{position:fixed;right:22px;bottom:22px;background:#111922;color:#fff;border-radius:12px;padding:11px 14px;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:.2s}.toast.show{opacity:1}
pre{white-space:pre-wrap;background:#f5f7f8;padding:14px;border-radius:12px;font-size:12px;max-height:330px;overflow:auto}
.voice{font-size:13px;color:var(--muted);margin-top:8px}
hr{border:0;border-top:1px solid var(--line);margin:19px 0}
@media(max-width:820px){.shell{grid-template-columns:1fr}aside{position:relative;height:auto}.status{display:none}nav{grid-template-columns:repeat(3,1fr)}main{padding:18px}.two,.three{grid-template-columns:1fr}.helper{grid-template-columns:repeat(2,1fr)}.master-row{grid-template-columns:1fr}h1{font-size:31px}.focus h1{font-size:35px}}

.login-gate{position:fixed;inset:0;z-index:999;background:rgba(12,20,27,.88);display:flex;align-items:center;justify-content:center;padding:20px}.login-gate.hidden{display:none}.login-card{width:min(500px,100%);background:#fff;border-radius:22px;padding:28px;box-shadow:0 25px 80px rgba(0,0,0,.3)}.brand.dark{color:#111922}.login-card h1{font-size:30px}.login-card .lead{font-size:15px}
.auth-gate{position:fixed;inset:0;z-index:999;background:rgba(12,20,27,.86);display:flex;align-items:center;justify-content:center;padding:20px}.auth-gate.hidden{display:none}.auth-card{width:min(520px,100%);background:#fff;border-radius:22px;padding:28px;box-shadow:0 25px 80px rgba(0,0,0,.28)}.brand.dark{color:#111922;margin-bottom:12px}.auth-card h1{font-size:30px}.auth-card .lead{font-size:15px}
.permission{margin-top:14px;padding:14px;border:1px solid #e3cf9f;background:#fffaf0;border-radius:13px}.checkline{display:flex;gap:10px;align-items:flex-start}.checkline input{width:auto;margin-top:5px}
.sourcechips{display:inline-flex;gap:5px;flex-wrap:wrap;margin-top:7px}.sourcechip{border:1px solid #bfd2df;background:#eef6fa;color:#155a84;border-radius:999px;padding:4px 8px;font-size:11px;font-weight:850;cursor:pointer}.unverified{display:inline-block;margin-top:7px;color:#8d3131;font-size:11px;font-weight:800}.baditem{border-left:4px solid #9b3f3f}.dangerbox{border-left:5px solid #9b3f3f;background:#fff6f6}
.scaffold{display:grid;gap:8px}.scaffold-title{font-size:12px;text-transform:uppercase;letter-spacing:.08em;font-weight:900;color:#61707b}.scaffold-node{border:1px solid #cbd9e3;background:#f5f9fb;padding:11px 12px;border-radius:12px}.scaffold-edge{text-align:center;color:#667782;font-size:12px;font-weight:850;min-height:16px}.usagegrid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.usagegrid>div{background:#f5f7f8;border-radius:13px;padding:14px}.usagegrid b{display:block;font-size:24px}.usagegrid span{font-size:12px;color:var(--muted)}
.modal{position:fixed;inset:0;z-index:1000;background:rgba(11,17,22,.72);display:flex;align-items:center;justify-content:center;padding:20px}.modal.hidden{display:none}.modal-card{width:min(760px,100%);max-height:85vh;overflow:auto;background:#fff;border-radius:20px;padding:20px;box-shadow:0 25px 80px rgba(0,0,0,.3)}.topline{display:flex;align-items:center;justify-content:space-between;gap:12px}.modal pre{max-height:none;background:#f6f8f9;border-radius:12px;padding:14px;white-space:pre-wrap}
@media(max-width:820px){.usagegrid{grid-template-columns:repeat(2,1fr)}}
.auditline{margin-bottom:10px}.auditgood,.auditwarn{display:inline-block;border-radius:999px;padding:5px 9px;font-size:11px;font-weight:850}.auditgood{background:#e8f5ee;color:#1f6848}.auditwarn{background:#fff2d8;color:#875b14}

.rating-box{margin-top:14px;padding:14px;border:1px solid var(--line);border-radius:14px;background:#fbfcfd}
.rating-box .actions{margin-top:8px}

.legacy-source{display:inline-block;margin-top:6px;color:#7a858e;font-size:11px;font-style:italic}
.scaffold-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}
.timeline{display:grid;gap:9px}.timeline-item{display:grid;grid-template-columns:30px 1fr;gap:8px;align-items:start}
.timeline-dot{width:28px;height:28px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:900}
.worked-step{display:grid;grid-template-columns:32px 1fr;gap:8px;align-items:start;margin-bottom:8px}
.hierarchy-level{position:relative}.hierarchy-level:before{content:"";position:absolute;left:-10px;top:50%;width:7px;border-top:1px solid #b9c8d3}
@media(max-width:700px){.scaffold-grid{grid-template-columns:1fr}}
.recent-list{display:grid;gap:8px}.recent-row{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:12px 0;border-bottom:1px solid var(--line)}.recent-row:last-child{border-bottom:0}.recent-row .btn{flex:none}

.course-progress-card{position:relative}
.course-title-row{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.course-title-row h2{margin-bottom:3px}
.course-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;margin:16px 0}
.course-stat{background:#f5f7f8;border-radius:12px;padding:11px}
.course-stat b{font-size:20px;display:block}
.course-progress{height:10px;background:#e6eaed;border-radius:999px;overflow:hidden;margin-top:7px}
.course-progress>div{height:100%;background:var(--accent)}
.course-material-row{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line)}
.course-material-row:last-child{border-bottom:0}
.concept-row{display:grid;grid-template-columns:1fr 120px;gap:10px;padding:9px 0;border-bottom:1px solid var(--line)}
@media(max-width:820px){.course-stats{grid-template-columns:repeat(2,1fr)}.course-material-row,.concept-row{grid-template-columns:1fr}}

.excluded-source{opacity:.68;background:#fafafa}
.source-actions{display:flex;gap:7px;flex-wrap:wrap;justify-content:flex-end}
.btn.exclude{background:#fff6df;color:#725315;border:1px solid #ead7a4}
.btn.restore{background:#eef8f1;color:#286044;border:1px solid #cce4d4}
.btn.delete-source{background:#fff0f0;color:#8b3232;border:1px solid #e9caca}
.source-status{font-size:11px;font-weight:850;padding:4px 7px;border-radius:999px;background:#eceff1}
.source-status.excluded{background:#fff3d6;color:#755412}
@media(max-width:820px){.source-actions{justify-content:flex-start}}

.guide-flow{display:grid;gap:12px;margin:20px 0}
.guide-step{display:grid;grid-template-columns:46px 1fr;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px}
.guide-step>span{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:var(--accent);color:#fff;font-weight:900}
.guide-step b{font-size:18px}.guide-step p{margin:5px 0 0;color:var(--muted);line-height:1.5}
.guide-help{margin-top:18px}.demo-card{margin-top:18px;display:flex;justify-content:space-between;gap:18px;align-items:center}
.onboarding{position:fixed;inset:0;background:rgba(5,16,24,.62);display:grid;place-items:center;padding:20px;z-index:9999}
.onboarding.hidden{display:none}
.onboarding-card{width:min(520px,100%);background:#fff;border-radius:22px;padding:26px;box-shadow:0 24px 80px rgba(0,0,0,.28)}
.onboarding-card h2{font-size:28px;margin:6px 0 10px}.onboarding-card p{font-size:17px;line-height:1.55;color:#4b5963}
.tour-progress{font-size:12px;font-weight:900;letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}
@media(max-width:720px){.demo-card{display:block}.demo-card .btn{margin-top:12px;width:100%}.guide-step{grid-template-columns:38px 1fr;padding:14px}.guide-step>span{width:32px;height:32px}}

.auth-card #registerFields{margin-top:16px;padding-top:14px;border-top:1px solid var(--line)}

.brand-subtitle{
  margin-top:4px;
  font-size:12px;
  line-height:1.35;
  font-weight:650;
  opacity:.78;
  max-width:190px;
}
.brand-subtitle.dark{
  color:#4f5f68;
  opacity:1;
}

.support-action-note{
  font-size:12px;
  line-height:1.4;
  color:var(--muted);
  margin-top:4px;
}


/* ---------- RecallHack V10.3 usability / iPhone pass ---------- */
:root{color-scheme:light dark}
[data-theme="light"]{color-scheme:light}
[data-theme="dark"]{
  color-scheme:dark;
  --bg:#11171c;--card:#1a2228;--ink:#eef4f7;--muted:#b2bec7;--line:#34414a;
  --accent:#69b4e2;--accent2:#17364a;--good:#77c79f;--warn:#d7ab66;--bad:#e28b8b;
  --shadow:0 10px 30px rgba(0,0,0,.22);
}
@media(prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#11171c;--card:#1a2228;--ink:#eef4f7;--muted:#b2bec7;--line:#34414a;
    --accent:#69b4e2;--accent2:#17364a;--good:#77c79f;--warn:#d7ab66;--bad:#e28b8b;
    --shadow:0 10px 30px rgba(0,0,0,.22);
  }
}
[data-theme="dark"] .card,[data-theme="dark"] input,[data-theme="dark"] select,[data-theme="dark"] textarea,
[data-theme="dark"] .item,[data-theme="dark"] .metric,[data-theme="dark"] .course-stat,
[data-theme="dark"] .guide-step,[data-theme="dark"] .ghost,[data-theme="dark"] .sourcechip,
[data-theme="dark"] .rating-box,[data-theme="dark"] .modal-card,[data-theme="dark"] .sheet-card{
  background:var(--card);color:var(--ink);border-color:var(--line)
}
[data-theme="dark"] .secondary{background:#26333c;color:var(--ink)}
[data-theme="dark"] .callout,[data-theme="dark"] .warn,[data-theme="dark"] .good{background:var(--card)}
@media(prefers-color-scheme:dark){
  :root:not([data-theme="light"]) .card,:root:not([data-theme="light"]) input,:root:not([data-theme="light"]) select,:root:not([data-theme="light"]) textarea,
  :root:not([data-theme="light"]) .item,:root:not([data-theme="light"]) .metric,:root:not([data-theme="light"]) .course-stat,
  :root:not([data-theme="light"]) .guide-step,:root:not([data-theme="light"]) .ghost,:root:not([data-theme="light"]) .sourcechip,
  :root:not([data-theme="light"]) .rating-box,:root:not([data-theme="light"]) .modal-card,:root:not([data-theme="light"]) .sheet-card{
    background:var(--card);color:var(--ink);border-color:var(--line)
  }
  :root:not([data-theme="light"]) .secondary{background:#26333c;color:var(--ink)}
}

.nav-group-label{font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:#7f919f;font-weight:900;margin:11px 12px 1px}
.mobile-topbar,.mobile-bottom-nav{display:none}

.study-context{
  max-width:1000px;margin:0 auto 14px;padding:10px 12px;border:1px solid var(--line);
  border-radius:14px;background:color-mix(in srgb,var(--card) 94%,var(--accent) 6%);
  display:grid;grid-template-columns:minmax(0,1fr) auto auto;gap:12px;align-items:center;
}
.study-context.hidden{display:none}
.context-main,.context-progress{display:grid;min-width:0}
.context-main span,.context-progress span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--muted);font-size:12px}
.context-coach{min-height:40px;border:1px solid var(--line);border-radius:11px;background:var(--card);color:var(--accent);font-weight:850;padding:8px 11px}

.coach-menu{margin-top:17px;border:1px solid var(--line);border-radius:14px;background:var(--card);padding:12px}
.coach-menu summary{cursor:pointer;font-weight:900;color:var(--accent)}
.coach-actions{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:10px}
.coach-actions button,.mobile-sheet .sheet-card>button{
  min-height:44px;border:1px solid var(--line);border-radius:12px;background:var(--card);color:var(--ink);font-weight:800;padding:10px
}

.confidence-buttons{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.confidence-buttons button{min-height:46px;border:1px solid var(--line);border-radius:12px;background:var(--card);color:var(--ink);font-weight:800}
.confidence-buttons button.on{background:var(--accent2);border-color:var(--accent);color:var(--accent)}

.study-map-details{margin-bottom:14px}
.study-map-details summary{cursor:pointer;font-weight:900;color:var(--accent);font-size:16px}
.retrieve-card{max-width:760px}
.empty-action{margin:12px 0;padding:13px;border-radius:12px;background:var(--accent2)}
.empty-action.hidden{display:none}
.timer-done{margin-top:16px;padding:14px;border-radius:13px;background:var(--accent2)}

.mobile-sheet{
  position:fixed;inset:0;background:rgba(5,15,22,.58);z-index:12000;
  display:flex;align-items:flex-end;justify-content:center;padding:18px;
}
.mobile-sheet.hidden{display:none}
.sheet-card{width:min(560px,100%);background:var(--card);border:1px solid var(--line);border-radius:22px;padding:16px;box-shadow:0 24px 80px rgba(0,0,0,.32)}
.sheet-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}
.sheet-card>button{width:100%;text-align:left;margin-top:7px}

.source-manage details,.danger-zone{margin-top:8px}
.source-manage summary,.danger-zone summary{cursor:pointer;font-weight:800;color:var(--muted)}

.status-word{display:inline-block;border-radius:999px;padding:5px 9px;font-size:12px;font-weight:850;background:var(--accent2);color:var(--accent)}
.status-word.stable{background:#e8f5ee;color:#1f6848}
.status-word.review{background:#fff2d8;color:#875b14}

input,select,textarea{background:var(--card);color:var(--ink)}
.sourcechip{min-height:38px}

/* iPhone / narrow phone layout */
@media(max-width:820px){
  body{
    font-size:17px;
    padding-bottom:calc(78px + env(safe-area-inset-bottom));
    -webkit-text-size-adjust:100%;
  }
  .shell{display:block;min-height:100vh}
  aside{display:none!important}
  .mobile-topbar{
    display:flex;position:sticky;top:0;z-index:7000;align-items:center;justify-content:space-between;
    padding:calc(10px + env(safe-area-inset-top)) 16px 10px;
    background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line)
  }
  .mobile-brand{font-size:21px;font-weight:950;letter-spacing:-.04em}
  .mobile-tagline{font-size:12px;color:var(--muted);line-height:1.25}
  main{padding:12px 14px calc(94px + env(safe-area-inset-bottom))}
  .screen{max-width:none}
  h1{font-size:30px;line-height:1.08}
  h2{font-size:23px}
  h3{font-size:18px}
  .lead{font-size:17px;line-height:1.5;margin-bottom:18px}
  .small{font-size:15px}
  .tiny{font-size:13px}
  .card{padding:17px;border-radius:17px}
  .two,.three,.grid.two,.grid.three{grid-template-columns:1fr!important}
  .btn,button,input,select,textarea{font-size:16px}
  .btn,nav button,.sourcechip{min-height:44px}
  input,select{min-height:48px}
  textarea{min-height:145px}
  .actions{gap:9px}
  .actions>.primary{min-height:50px}
  .sourcechip{padding:8px 11px}
  .mission-title{font-size:26px}
  .study-context{
    position:sticky;top:calc(58px + env(safe-area-inset-top));z-index:6500;
    grid-template-columns:1fr auto;margin:0 0 12px;border-radius:13px;
    box-shadow:0 5px 16px rgba(0,0,0,.08)
  }
  .context-main{grid-column:1}
  .context-progress{grid-column:1}
  .context-coach{grid-column:2;grid-row:1 / span 2;align-self:center;min-height:44px}
  .coach-actions{grid-template-columns:1fr}
  .mobile-bottom-nav{
    display:grid;grid-template-columns:repeat(5,1fr);position:fixed;left:0;right:0;bottom:0;z-index:8000;
    padding:7px 6px calc(7px + env(safe-area-inset-bottom));
    background:color-mix(in srgb,var(--card) 94%,transparent);backdrop-filter:blur(16px);
    border-top:1px solid var(--line);box-shadow:0 -8px 24px rgba(0,0,0,.08)
  }
  .mobile-bottom-nav button{
    min-height:52px;border:0;background:transparent;color:var(--muted);border-radius:12px;font-size:12px;font-weight:850;padding:6px 3px
  }
  .mobile-bottom-nav button.on{background:var(--accent2);color:var(--accent)}
  .mobile-sheet{padding:12px 12px calc(12px + env(safe-area-inset-bottom))}
  .sheet-card{max-height:78vh;overflow:auto}
  .course-title-row{display:block}
  .course-title-row .badge,.course-title-row .status-word{margin-top:7px}
  .course-stats{grid-template-columns:repeat(2,1fr)}
  .course-material-row,.concept-row{grid-template-columns:1fr}
  .source-actions{justify-content:flex-start}
  .recent-row{align-items:flex-start}
  .recent-row .btn{min-width:100px}
  .onboarding-card{padding:20px}
  .onboarding-card h2{font-size:25px}
  .focus{min-height:auto}
}

@media(max-width:390px){
  main{padding-left:11px;padding-right:11px}
  .card{padding:15px}
  .mobile-bottom-nav button{font-size:11px}
  .context-coach{font-size:12px;padding:7px 8px}
}


/* ============================================================
   RecallHack V10.4 responsive layout
   Desktop: persistent sidebar + wide study canvas
   Phone/tablet: compact mobile app layout
   ============================================================ */

/* Desktop / laptop */
@media (min-width: 821px){
  .shell{
    display:grid;
    grid-template-columns:260px minmax(0,1fr);
    min-height:100vh;
  }
  aside{
    display:block!important;
    position:sticky;
    top:0;
    height:100vh;
    padding:26px 18px;
    overflow-y:auto;
    background:#111922;
  }
  .desktop-nav{display:block}
  .mobile-topbar,.mobile-bottom-nav{display:none!important}
  main{
    width:100%;
    min-width:0;
    padding:34px clamp(28px,4vw,58px) 56px;
  }
  .screen{
    width:100%;
    max-width:1180px;
    margin:0 auto;
  }
  .study-context{
    position:sticky;
    top:12px;
    z-index:5000;
    max-width:1180px;
    margin:0 auto 18px;
    box-shadow:0 5px 16px rgba(0,0,0,.05);
  }
  .grid.two,.two{
    grid-template-columns:minmax(0,1.25fr) minmax(320px,.75fr);
    gap:20px;
  }
  .grid.three,.three{
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:18px;
  }
  .retrieve-card{
    max-width:880px;
    margin:0 auto;
  }
  .study-map-details{
    max-width:880px;
    margin:0 auto 16px;
  }
  .card{
    padding:22px;
  }
  h1{
    max-width:900px;
  }
  .lead{
    max-width:900px;
  }
  .coach-actions{
    grid-template-columns:repeat(5,minmax(0,1fr));
  }
  .course-stats{
    grid-template-columns:repeat(4,minmax(0,1fr));
  }
  .course-material-row{
    grid-template-columns:minmax(0,1fr) auto;
    gap:18px;
  }
  .concept-row{
    grid-template-columns:minmax(0,1fr) minmax(260px,360px);
    gap:20px;
  }
}

/* Mid-size tablet / narrow laptop */
@media (min-width:821px) and (max-width:1050px){
  .shell{grid-template-columns:225px minmax(0,1fr)}
  main{padding:28px 24px 48px}
  .grid.two,.two{grid-template-columns:1fr}
  .coach-actions{grid-template-columns:repeat(3,minmax(0,1fr))}
  .course-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
}

/* Phone refinements */
@media (max-width:820px){
  .shell{display:block!important}
  main{width:100%;max-width:none}
  .screen{width:100%;max-width:none}
  .study-context{width:100%}
  .grid.two,.grid.three,.two,.three{grid-template-columns:1fr!important}
  .retrieve-card,.study-map-details{max-width:none;width:100%}
  .course-stats{grid-template-columns:repeat(2,minmax(0,1fr))!important}
}

/* Very small iPhones */
@media (max-width:390px){
  .course-stats{grid-template-columns:1fr 1fr!important}
  .confidence-buttons{grid-template-columns:1fr!important}
  .confidence-buttons button{min-height:48px}
}

.build-marker{
  margin-top:3px;
  font-size:10px;
  line-height:1;
  letter-spacing:.05em;
  font-weight:800;
  opacity:.45;
}
.build-marker.dark{color:#667985;opacity:.7}


/* ============================================================
   RecallHack V10.5 polish
   ============================================================ */
.reviews-summary-head{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:14px;
  margin-bottom:12px;
}
.reviews-summary-head h3{margin:0 0 3px}
.review-more{
  padding:8px 3px 0;
  font-weight:700;
}
#startReviewsBtn.hidden{display:none!important}

/* Large desktop: use more of the screen without becoming too wide */
@media (min-width:1200px){
  .shell{grid-template-columns:240px minmax(0,1fr)}
  main{padding:34px 42px 58px}
  .screen,.study-context{max-width:1380px}
  #today .grid.two{
    grid-template-columns:minmax(0,1.45fr) minmax(360px,.75fr);
    gap:22px;
  }
  #today .card{min-height:0}
  .recent-list{width:100%}
  .recent-row{grid-template-columns:minmax(0,1fr) auto}
  .recent-row .btn{min-width:96px}
}

/* Very wide desktop */
@media (min-width:1550px){
  .screen,.study-context{max-width:1500px}
  main{padding-left:52px;padding-right:52px}
}

/* iPhone tightening */
@media (max-width:820px){
  .mobile-topbar{
    padding:calc(8px + env(safe-area-inset-top)) 16px 8px;
  }
  .mobile-brand{font-size:20px}
  .mobile-tagline{font-size:11.5px}
  main{padding-top:10px}
  h1{font-size:27px;line-height:1.08;margin-bottom:10px}
  .lead{font-size:16px;line-height:1.42;margin-bottom:14px}
  .eyebrow{margin-bottom:6px}
  .card{padding:15px}
  #today .mission-title{font-size:24px;line-height:1.16}
  #today .grid.two{gap:14px}
  #today .card{margin-bottom:0}
  .reviews-summary-head{
    align-items:center;
    gap:10px;
  }
  .reviews-summary-head #startReviewsBtn{
    min-height:44px;
    white-space:nowrap;
    padding:10px 13px;
  }
  #dueList .item:nth-child(n+3){display:none}
  .recent-row{
    gap:12px;
    padding:14px 0;
  }
  .recent-row .btn{
    min-width:92px;
    min-height:46px;
    padding:10px 14px;
  }
  .coach-menu{margin-top:14px}
  .onboarding-card{
    padding:18px;
    max-height:72vh;
    overflow:auto;
  }
  .onboarding-card h2{font-size:24px}
}

/* Smaller iPhones */
@media (max-width:390px){
  h1{font-size:25px}
  #today .mission-title{font-size:22px}
  .reviews-summary-head{display:block}
  .reviews-summary-head #startReviewsBtn{margin-top:9px;width:100%}
}

@media (min-width:821px){
  #today > .grid.two > .card{min-height:220px}
  #today #dueList{margin-top:8px}
}

/* V10.6 roadmap/audio/onboarding */
.roadmap-actions{display:flex;align-items:end;justify-content:flex-end}.schedule-list{display:grid;gap:10px}.schedule-row{display:grid;grid-template-columns:170px minmax(0,1fr) auto;gap:16px;align-items:center}.schedule-date{display:grid;gap:3px}.schedule-date span{font-size:13px;color:var(--muted);font-weight:800}.schedule-controls{display:flex;gap:8px}.proposal-row{display:grid;grid-template-columns:28px 1fr;gap:10px;align-items:start;padding:12px 0;border-top:1px solid var(--line)}.proposal-row input{width:20px;height:20px}.proposal-row span span{display:block;margin-top:3px}.audio-player-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start}.audio-section{padding:18px 0;border-top:1px solid var(--line)}.retrieval-pause{margin-top:12px;padding:12px;border-radius:12px;background:var(--accent2)}.help-mode-grid .card{display:flex;flex-direction:column}.help-mode-grid .actions{margin-top:auto}.evidence-grid a{color:var(--accent);font-weight:800}.tour-overlay{position:fixed;inset:0;z-index:20000;background:rgba(5,15,22,.72);display:flex;align-items:center;justify-content:center;padding:18px}.tour-overlay.hidden{display:none}.tour-panel{width:min(650px,100%);background:var(--card);border:1px solid var(--line);border-radius:24px;padding:24px;box-shadow:0 30px 100px rgba(0,0,0,.35)}.tour-progress{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-weight:800}.tour-visual{width:86px;height:86px;border-radius:24px;display:grid;place-items:center;background:var(--accent2);color:var(--accent);font-size:38px;font-weight:950;margin:24px 0}.tour-caption{margin-top:14px;padding:12px;border-radius:12px;background:var(--accent2);font-size:14px}@media(max-width:820px){.schedule-row{grid-template-columns:1fr}.roadmap-actions{justify-content:flex-start}.audio-player-head{display:block}.help-mode-grid{grid-template-columns:1fr!important}.tour-panel{padding:18px;max-height:82vh;overflow:auto}.tour-visual{width:68px;height:68px;margin:16px 0;font-size:30px}}

.roadmap-hint{margin-top:10px;font-weight:750;color:var(--muted)}.section-audio audio{width:100%;margin-top:10px;max-width:520px}

.audio-sources{margin-top:10px;padding:10px 12px;border-radius:10px;background:var(--accent2);font-size:13px}
.audio-sources span{display:block;margin-top:3px}
.audio-sources.warning{background:transparent;border:1px solid var(--line);color:var(--muted)}

#audioVoiceStatus{margin-top:6px}
.section-audio audio{width:100%;margin-top:10px}


/* RecallHack V10.7 — Source Listening */
.listen-mode-grid .card{display:flex;flex-direction:column}
.listen-mode-grid .actions{margin-top:auto}
.listen-player-head,.listen-outline-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px}
.listen-outline-head select{max-width:340px}
.listen-progress-track{height:8px;background:var(--line);border-radius:999px;overflow:hidden;margin:15px 0}
.listen-progress-track>div{height:100%;width:2%;background:var(--accent);transition:width .2s ease}
.listen-section-row{border-top:1px solid var(--line);padding:8px 0}
.listen-section-row:first-child{border-top:0}
.listen-section-row summary{cursor:pointer;padding:10px 2px;display:flex;justify-content:space-between}
.listen-section-row summary span{display:flex;justify-content:space-between;gap:12px;width:100%}
.listen-source-text{white-space:pre-wrap;line-height:1.62}
.active-mark{background:var(--accent2)!important;border-color:var(--accent)!important}
.listen-explanation{margin-top:10px}
.listen-explain-card{padding:14px;border-radius:13px;background:var(--accent2)}
#originalLectureAudio{width:100%;margin-top:10px}
.feature-grid .card h2{margin-bottom:8px}
.feature-grid .card p{margin-bottom:0}
@media(max-width:820px){
  .listen-player-head,.listen-outline-head{display:block}
  .listen-outline-head select{max-width:none;width:100%;margin-top:10px}
  .listen-section-row .actions{display:grid;grid-template-columns:1fr 1fr}
  .listen-section-row .btn{width:100%}
}
@media(max-width:390px){
  .listen-section-row .actions{grid-template-columns:1fr}
}


/* RecallHack V11 — Adaptive Learning Profiles */
.profile-status-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px}
.status-pill{display:inline-flex;padding:7px 11px;border-radius:999px;background:var(--line);font-size:12px;font-weight:900;white-space:nowrap}.status-pill.active{background:var(--accent2);color:var(--accent)}
.profile-setup-actions{margin-top:14px}.profile-choice{appearance:none;text-align:left;border:1px solid var(--line);background:var(--card);border-radius:16px;padding:16px;cursor:pointer;color:inherit;min-height:100px}.profile-choice:hover{border-color:var(--accent)}.profile-choice b,.profile-choice span{display:block}.profile-choice span{margin-top:6px;color:var(--muted);font-size:13px;line-height:1.35}
.profile-modal{z-index:22000}.profile-modal-card{width:min(760px,calc(100vw - 28px));max-height:88vh;overflow:auto}.wide-modal{width:min(900px,calc(100vw - 28px))}.profile-modal-choices{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:16px 0}
.question-group{margin-top:22px}.question-group h3{position:sticky;top:-1px;background:var(--card);padding:8px 0;z-index:1}.question-row{display:grid;grid-template-columns:minmax(0,1fr) 180px;gap:14px;align-items:center;padding:12px 0;border-top:1px solid var(--line)}.question-row>span{line-height:1.45}.question-row select{margin:0}
.accommodation-options{display:grid;grid-template-columns:1fr 1fr;gap:7px 16px;margin:12px 0 18px}.accommodation-row{padding:8px 0}
.adaptation-list{display:grid;gap:8px}.adaptation-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:14px;align-items:center;padding:13px;border:1px solid var(--line);border-radius:13px}.adaptation-row span,.adaptation-row small{display:block}.adaptation-row small{color:var(--muted);margin-top:4px;line-height:1.35}.adaptation-row input{width:24px;height:24px}
.extraction-group{margin-top:18px}.extraction-row{display:grid;grid-template-columns:26px 1fr;gap:9px;align-items:start;padding:12px 0;border-top:1px solid var(--line)}.extraction-row input{width:20px;height:20px}.extraction-row span,.extraction-row small{display:block}.extraction-row small{color:var(--muted);margin-top:3px}
.profile-recommended::after{content:' •';color:var(--accent)}
@media(max-width:820px){.profile-status-head{display:block}.status-pill{margin-top:8px}.profile-modal-choices{grid-template-columns:1fr}.question-row{grid-template-columns:1fr}.question-row select{width:100%;font-size:16px}.accommodation-options{grid-template-columns:1fr}.profile-choice{min-height:auto}}

.profile-sources{margin-top:7px;font-weight:750}


/* RecallHack V11.1 — Evidence & Conflict Resolution */
.evidence-list{display:grid;gap:9px}
.evidence-row{border:1px solid var(--line);border-radius:14px;overflow:hidden}
.evidence-row summary{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:14px;align-items:center;padding:14px;cursor:pointer;list-style:none}
.evidence-row summary::-webkit-details-marker{display:none}
.evidence-row summary span:first-child,.evidence-row summary small{display:block}
.evidence-row summary small{margin-top:4px;color:var(--muted);line-height:1.4;font-weight:500}
.evidence-badge{font-size:11px;font-weight:900;border-radius:999px;padding:6px 9px;background:var(--line);white-space:nowrap}
.evidence-confirmed .evidence-badge{background:var(--accent2);color:var(--accent)}
.evidence-mixed{border-style:dashed}
.evidence-mixed .evidence-badge{background:var(--warn-bg, var(--accent2))}
.evidence-accommodation .evidence-badge{background:var(--accent2);font-weight:950}
.evidence-detail{border-top:1px solid var(--line);padding:13px 14px;display:grid;gap:8px}
.evidence-source{display:grid;grid-template-columns:180px minmax(0,1fr);gap:10px;font-size:13px}
.evidence-source span{color:var(--muted)}
@media(max-width:640px){
  .evidence-row summary{grid-template-columns:1fr}
  .evidence-badge{justify-self:start}
  .evidence-source{grid-template-columns:1fr;gap:2px}
}


/* RecallHack V11.2 — Course lifecycle */
.archived-courses-section{margin-top:28px;padding-top:22px;border-top:1px solid var(--line)}
.archived-heading{display:flex;justify-content:space-between;align-items:end;gap:18px;margin-bottom:13px}
.archived-course-card{opacity:.9}
.archived-course-card .status-word{font-weight:900}
.course-lifecycle-options{display:grid;grid-template-columns:1fr 1fr;gap:14px;padding-top:12px}
.course-lifecycle-options>div{padding:14px;border:1px solid var(--line);border-radius:14px}
.permanent-delete-option{border-style:dashed!important}
.course-lifecycle-zone summary{font-weight:850}
@media(max-width:720px){
  .archived-heading{display:block}
  .course-lifecycle-options{grid-template-columns:1fr}
}


/* RecallHack V11.3 — username accounts + one voice */
.voice-fixed{min-height:46px;border:1px solid var(--line);border-radius:12px;padding:10px 12px;display:flex;flex-direction:column;justify-content:center}
.voice-fixed b{font-size:14px}
.auth-card #registerFields{margin-top:14px;padding-top:12px;border-top:1px solid var(--line)}
#settingsUsername,#accountUsername{text-transform:none}


/* RecallHack V11.4 — Today 2.0 Decision Engine */
.today-time-row{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin:14px 0 16px}
.time-chip{border:1px solid var(--line);background:var(--card);border-radius:999px;padding:8px 12px;font-weight:800;cursor:pointer}
.time-chip.on{outline:2px solid var(--accent);outline-offset:1px}
.today-decision-card{padding:22px}
.today-decision-head{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:18px;align-items:start}
.decision-course{font-size:13px;font-weight:900;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);margin-top:4px}
.today-decision-card h2{font-size:clamp(24px,4vw,38px);line-height:1.08;margin:6px 0 8px;max-width:820px}
.decision-minutes{border:1px solid var(--line);border-radius:999px;padding:8px 12px;font-weight:900;white-space:nowrap}
.decision-reason-summary{font-size:15px;max-width:760px}
.decision-why{margin-top:14px;padding:14px;border:1px solid var(--line);border-radius:14px}
.decision-why ul{margin:8px 0 8px 18px}
.decision-stop-rule{margin-top:14px;padding-top:12px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
.today-friction-card h3{margin-bottom:10px}
.friction-actions{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}
.friction-actions button{border:1px solid var(--line);background:var(--card);border-radius:12px;padding:12px;text-align:left;font-weight:800;cursor:pointer}
.friction-actions button:hover{transform:translateY(-1px)}
.today-secondary>summary{font-weight:850;cursor:pointer;padding:10px 2px}
@media(max-width:720px){
  .today-decision-head{grid-template-columns:1fr}
  .decision-minutes{justify-self:start}
  .friction-actions{grid-template-columns:1fr 1fr}
  .today-decision-card{padding:18px}
}
@media(max-width:430px){
  .friction-actions{grid-template-columns:1fr}
}


/* RecallHack V11.4.1 — Today mobile polish */
.today-decision-card{padding:20px 22px}
.today-decision-card h2{margin:4px 0 6px}
.decision-course{margin-top:2px}
.decision-minutes{font-size:13px;line-height:1.25}
.friction-actions-primary{grid-template-columns:repeat(3,minmax(0,1fr))}
.friction-actions-more{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:9px}
.friction-actions-more.hidden{display:none}
.today-friction-card{padding:18px}
.today-friction-card h3{font-size:20px;line-height:1.2}
@media(max-width:720px){
  .today-decision-card{padding:16px 18px}
  .today-decision-card h2{font-size:clamp(26px,8vw,34px);margin-bottom:4px}
  .today-decision-head{gap:8px}
  .decision-minutes{justify-self:start;margin-top:3px}
  .decision-reason-summary{font-size:14px}
  .decision-stop-rule{margin-top:10px;padding-top:10px;line-height:1.4}
  .friction-actions-primary{grid-template-columns:1fr 1fr}
  .friction-actions-primary button:last-child{grid-column:1 / -1}
  .friction-actions-more{grid-template-columns:1fr 1fr}
  .today-friction-card{padding:15px}
}
@media(max-width:430px){
  .friction-actions-primary{grid-template-columns:1fr 1fr}
  .friction-actions-primary button:last-child{grid-column:1 / -1}
  .friction-actions-more{grid-template-columns:1fr}
}


/* RecallHack V11.4.2 — desktop readability */
@media (min-width:1051px){
  body{font-size:17px;line-height:1.52}
  .shell{grid-template-columns:272px minmax(0,1fr)}
  aside{padding:26px 20px}
  aside .brand{font-size:29px}
  aside .brand-subtitle{font-size:13.5px;line-height:1.35}
  .desktop-nav{gap:7px}
  .desktop-nav button{font-size:14.5px;line-height:1.25;padding:10px 12px}
  .nav-group-label{font-size:11.5px;letter-spacing:.12em;margin-top:6px}
  .status{font-size:13px}

  main{padding:38px clamp(34px,4.5vw,68px) 64px}
  .screen{max-width:1260px}
  .study-context{max-width:1260px}

  .eyebrow,.kicker{font-size:13.5px}
  h1{font-size:41px}
  h2{font-size:27px}
  h3{font-size:20px}
  .lead{font-size:19px;line-height:1.5}
  .small{font-size:14.5px;line-height:1.48}
  .tiny{font-size:13px;line-height:1.45}
  label{font-size:15.5px}
  input,select,textarea{font-size:16px}
  .btn{font-size:15.5px;padding:12px 17px}
  .pill,.badge{font-size:13px}
  .sourcechip,.unverified{font-size:12px}

  .today-time-row{font-size:15px;gap:10px}
  .time-chip{font-size:15px;padding:9px 14px}
  .today-decision-card{padding:24px 26px}
  .decision-course{font-size:14.5px}
  .today-decision-card h2{font-size:clamp(32px,3vw,42px)}
  .decision-minutes{font-size:14.5px;padding:9px 13px}
  .decision-reason-summary{font-size:16px;line-height:1.45}
  .decision-stop-rule{font-size:14.5px;line-height:1.48}
  .decision-why{font-size:15px}
  .today-friction-card h3{font-size:22px}
  .friction-actions button{font-size:15.5px;padding:13px 14px}
  .today-secondary>summary{font-size:15.5px}

  .card{padding:24px}
  .item,.recent-row,.concept-row,.schedule-row{font-size:15.5px}
  .question{font-size:23px}
  .voice{font-size:14.5px}
  pre{font-size:13.5px}
}


/* RecallHack V11.5 — RecallHack Ask */
.ask-compose{max-width:980px}
.ask-scope-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.ask-scope{border:1px solid var(--line);background:var(--card);border-radius:999px;padding:9px 13px;font-weight:850;cursor:pointer}
.ask-scope.on{outline:2px solid var(--accent);outline-offset:1px}
.ask-context-grid{margin-bottom:12px}
.ask-compose textarea{min-height:116px;resize:vertical}
.ask-outside-toggle{margin-top:12px}
.ask-answer-card{max-width:1050px}
.ask-answer-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px}
.ask-answer-text{font-size:1.05em;line-height:1.65;margin-top:12px}
.ask-answer-text p{margin:0 0 12px}
.ask-inline-cite{border:0;background:transparent;color:var(--accent);font-weight:900;padding:0 2px;cursor:pointer;vertical-align:baseline}
.ask-citations{margin-top:16px;padding-top:14px;border-top:1px solid var(--line)}
.ask-source-chip{text-align:left}
.ask-outside-box{margin-top:17px;padding:15px;border:1px dashed var(--line);border-radius:14px}
.ask-followups{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}
.ask-suggestions{display:flex;gap:7px;flex-wrap:wrap;margin-top:12px}
.ask-suggestion{border:1px solid var(--line);border-radius:999px;background:var(--card);padding:7px 10px;cursor:pointer}
.ask-quiz-box{margin-top:16px;padding:16px;border:1px solid var(--line);border-radius:14px}
.ask-quiz-answer{margin-top:12px;padding-top:12px;border-top:1px solid var(--line)}
.ask-saved-wrap>summary{font-weight:850;cursor:pointer}
.ask-saved-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:14px;align-items:start;padding:12px 0;border-bottom:1px solid var(--line)}
.ask-saved-row:last-child{border-bottom:0}
@media(max-width:720px){
  .ask-scope-tabs{display:grid;grid-template-columns:1fr}
  .ask-scope{text-align:left;border-radius:12px}
  .ask-answer-head{display:block}
  .ask-answer-head .status-pill{display:inline-block;margin-top:8px}
  .ask-followups{display:grid;grid-template-columns:1fr 1fr}
  .ask-saved-row{grid-template-columns:1fr}
}
@media(max-width:430px){
  .ask-followups{grid-template-columns:1fr}
}


/* RecallHack V11.5.1 — mobile login / autofill safety */
.auth-gate{
  overflow-y:auto;
  overflow-x:hidden;
  -webkit-overflow-scrolling:touch;
  overscroll-behavior:contain;
  padding-top:max(20px,env(safe-area-inset-top));
  padding-bottom:max(24px,env(safe-area-inset-bottom));
}
.auth-card{max-width:520px}
.login-existing-note{font-weight:600;color:var(--muted);font-size:.9em}
.login-help{margin-top:4px}
@media(max-width:720px){
  .auth-gate{
    align-items:flex-start;
    justify-content:center;
    padding-left:14px;
    padding-right:14px;
    min-height:100dvh;
  }
  .auth-card{
    width:100%;
    margin:8px auto calc(28px + env(safe-area-inset-bottom));
    padding:20px;
    border-radius:18px;
    max-height:none;
    overflow:visible;
  }
  .auth-card input,.auth-card button{min-height:48px;font-size:17px}
  .auth-card .actions{gap:10px;flex-wrap:wrap}
  .auth-card .actions .btn{flex:1 1 150px}
  #loginMsg{min-height:24px;padding-bottom:6px}
}
@supports not (height:100dvh){
  @media(max-width:720px){.auth-gate{min-height:100vh}}
}


/* RecallHack V11.5.2 — speed + working feedback */
.working-indicator{
  position:fixed;
  z-index:2500;
  right:22px;
  bottom:22px;
  display:flex;
  align-items:center;
  gap:11px;
  max-width:min(430px,calc(100vw - 32px));
  background:#111922;
  color:#fff;
  border-radius:14px;
  padding:12px 15px;
  box-shadow:var(--shadow);
  pointer-events:none;
}
.working-indicator.hidden{display:none}
.working-spinner{
  width:20px;height:20px;min-width:20px;
  border:3px solid rgba(255,255,255,.28);
  border-top-color:#fff;
  border-radius:50%;
  animation:recallhack-spin .8s linear infinite;
}
.working-copy{display:grid;gap:2px;line-height:1.25}
.working-copy b{font-size:14px}
.working-copy span{font-size:12.5px;color:#d7e0e6}
@keyframes recallhack-spin{to{transform:rotate(360deg)}}
button.is-busy,button[aria-busy="true"]{cursor:wait;opacity:.76}
button:disabled{cursor:not-allowed}
#uploadMsg,#askStatus,#audioStatus,#listenPlayerStatus{min-height:1.4em}
@media(max-width:820px){
  .working-indicator{
    left:12px;
    right:12px;
    bottom:calc(78px + env(safe-area-inset-bottom));
    max-width:none;
    padding:12px 14px;
  }
  .working-copy b{font-size:15px}
  .working-copy span{font-size:13px}
}


/* RecallHack V11.5.3 — visible audio handoff */
.audio-action-state{
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;
  gap:12px;
  margin-top:14px;
  padding:15px 16px;
  border:2px solid var(--line);
  border-radius:16px;
  background:var(--card);
}
.audio-action-state.hidden{display:none}
.audio-action-state.is-loading{border-color:rgba(23,95,141,.35);background:var(--accent2)}
.audio-action-state.is-ready,.audio-action-state.is-done{border-color:rgba(31,104,72,.32);background:#eef8f2}
.audio-action-state.is-playing{border-color:rgba(23,95,141,.45);background:var(--accent2)}
.audio-action-state.is-error{border-color:#d87878;background:#fff1f1}
.audio-action-icon{
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:50%;
  background:rgba(23,95,141,.11);
  font-size:22px;
  font-weight:900;
}
.audio-action-icon.spinning{
  color:transparent;
  border:3px solid rgba(23,95,141,.22);
  border-top-color:var(--accent);
  background:transparent;
  animation:recallhack-spin .8s linear infinite;
}
.audio-action-copy{display:grid;gap:3px;line-height:1.25}
.audio-action-copy b{font-size:17px}
.audio-action-copy span{font-size:14px}
.audio-action-play{min-width:180px}
.audio-inline-status{
  display:flex;
  align-items:center;
  gap:9px;
  margin:12px 0;
  padding:11px 13px;
  min-height:46px;
  border-radius:12px;
  background:var(--accent2);
  line-height:1.3;
}
.audio-inline-status b{font-size:15px}
.audio-inline-spinner{
  width:19px;height:19px;min-width:19px;
  border:3px solid rgba(23,95,141,.22);
  border-top-color:var(--accent);
  border-radius:50%;
  animation:recallhack-spin .8s linear infinite;
}
.audio-inline-spinner.hidden{display:none}
.audio-status-text{margin-top:8px}
@media(max-width:820px){
  .audio-action-state{
    grid-template-columns:auto minmax(0,1fr);
    padding:16px;
    margin-top:14px;
    box-shadow:0 5px 18px rgba(0,0,0,.08);
  }
  .audio-action-copy b{font-size:19px}
  .audio-action-copy span{font-size:15px;line-height:1.35}
  .audio-action-play{
    grid-column:1 / -1;
    width:100%;
    min-height:54px;
    font-size:17px;
    margin-top:3px;
  }
  .audio-inline-status{
    min-height:54px;
    padding:13px 14px;
  }
  .audio-inline-status b{font-size:16px}
  #listenPlayerCard .actions{
    display:grid;
    grid-template-columns:1fr 1fr;
  }
  #listenPlayCurrentBtn{
    grid-column:1 / -1;
    grid-row:1;
    min-height:52px;
    font-size:16px;
  }
}


/* RecallHack V11.5.4 — post-login orientation */
.post-login-welcome{
  position:fixed;
  inset:0;
  z-index:3200;
  display:grid;
  place-items:center;
  padding:22px;
  background:rgba(9,18,25,.58);
  backdrop-filter:blur(3px);
}
.post-login-welcome.hidden{display:none}
.post-login-welcome-card{
  width:min(680px,100%);
  max-height:calc(100dvh - 44px);
  overflow:auto;
  background:var(--card);
  border-radius:22px;
  padding:26px;
  box-shadow:0 24px 70px rgba(0,0,0,.27);
}
.post-login-welcome-card h1{margin:5px 0 7px}
.post-login-choices{
  display:grid;
  gap:11px;
  margin-top:20px;
}
.post-login-choice{
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;
  gap:13px;
  width:100%;
  min-height:78px;
  padding:14px 16px;
  text-align:left;
  border:1px solid var(--line);
  border-radius:16px;
  background:var(--card);
  color:inherit;
  cursor:pointer;
}
.post-login-choice:hover{border-color:var(--accent);background:var(--accent2)}
.post-login-choice.primary-choice{
  border:2px solid var(--accent);
  background:var(--accent2);
}
.post-login-choice-icon{
  width:42px;height:42px;
  display:grid;place-items:center;
  border-radius:50%;
  background:var(--accent2);
  color:var(--accent);
  font-size:21px;
  font-weight:900;
}
.primary-choice .post-login-choice-icon{
  background:var(--accent);
  color:#fff;
}
.post-login-choice b{
  display:block;
  font-size:18px;
  margin-bottom:3px;
}
.post-login-choice small{
  display:block;
  font-size:14px;
  line-height:1.35;
  color:var(--muted);
}
.post-login-arrow{
  font-size:30px;
  line-height:1;
  color:var(--muted);
}
.post-login-hide-choice{
  margin-top:18px;
  font-size:14px;
}
@media(max-width:720px){
  .post-login-welcome{
    align-items:start;
    padding:calc(14px + env(safe-area-inset-top)) 12px calc(14px + env(safe-area-inset-bottom));
    overflow:auto;
  }
  .post-login-welcome-card{
    max-height:none;
    border-radius:18px;
    padding:20px 16px;
    margin:auto 0;
  }
  .post-login-welcome-card h1{
    font-size:29px;
    line-height:1.08;
  }
  .post-login-choice{
    min-height:86px;
    padding:14px;
  }
  .post-login-choice b{font-size:18px}
  .post-login-choice small{font-size:15px}
  .post-login-hide-choice{font-size:15px}
}

/* RecallHack V11.6 — Books & Assigned Reading */
.book-upload-fields{margin-top:16px;padding:15px;border:1px solid var(--line);border-radius:14px;background:var(--accent2)}
.book-picker-action{display:flex;align-items:end}.book-picker-action .btn{width:100%}
.book-spoiler-card{border-left:4px solid var(--accent)}
.book-structure-list{display:grid;gap:7px;max-height:520px;overflow:auto;padding-right:3px}
.book-structure-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px;align-items:center;padding:10px 0;border-bottom:1px solid var(--line)}
.book-structure-row:last-child{border-bottom:0}.book-structure-row span{display:block;margin-top:3px}
.book-page-range{margin:13px 0}.book-page-range summary{cursor:pointer;font-weight:800}
.book-assignment-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:14px;align-items:center;padding:14px 0;border-bottom:1px solid var(--line)}
.book-assignment-row:last-child{border-bottom:0}.book-assignment-row.completed{opacity:.68}.book-assignment-actions{display:flex;gap:7px;flex-wrap:wrap;justify-content:flex-end}
.ask-book-context{margin:8px 0 14px;padding:9px 11px;border-radius:10px;background:var(--accent2);font-weight:800;color:var(--accent)}
@media(max-width:820px){.book-structure-list{max-height:none}.book-structure-row,.book-assignment-row{grid-template-columns:1fr}.book-structure-row .btn{width:100%}.book-assignment-actions{display:grid;grid-template-columns:1fr}.book-assignment-actions .btn{width:100%;min-height:48px}.book-header-card .course-title-row{display:block}.book-header-card #askThisBookBtn{width:100%;margin-top:12px}}


/* RecallHack V11.6.1 — in-app guidance */
.books-how-it-works{margin-bottom:16px;border-left:4px solid var(--accent)}
.books-help-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:14px}
.books-help-steps>div{padding:12px;border:1px solid var(--line);border-radius:12px;background:var(--card)}
.books-help-steps span{display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--accent2);color:var(--accent);font-weight:900;margin-bottom:8px}
.books-help-steps b{display:block;margin-bottom:5px}
.books-help-steps small{display:block;line-height:1.35;color:var(--muted)}
.new-in-recallhack{
  position:fixed;inset:0;z-index:3250;display:grid;place-items:center;padding:18px;
  background:rgba(8,17,24,.58);backdrop-filter:blur(3px);
}
.new-in-recallhack.hidden{display:none}
.new-in-card{width:min(560px,100%);background:var(--card);border-radius:20px;padding:24px;box-shadow:0 24px 70px rgba(0,0,0,.28)}
.new-in-card h2{margin:5px 0 8px}
.new-in-points{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:16px 0}
.new-in-points span{padding:9px 10px;border-radius:10px;background:var(--accent2);font-weight:750}
@media(max-width:820px){
  .books-help-steps{grid-template-columns:1fr}
  .books-how-it-works .topline{display:block}
  .books-how-it-works #dismissBooksHelp{width:100%;margin-top:10px}
  .new-in-recallhack{align-items:start;padding:calc(14px + env(safe-area-inset-top)) 12px}
  .new-in-card{margin:auto 0;padding:20px 16px}
  .new-in-points{grid-template-columns:1fr}
  .new-in-card .actions{display:grid;grid-template-columns:1fr}
  .new-in-card .btn{width:100%;min-height:48px}
}

.book-source-help-link{appearance:none;border:0;background:transparent;padding:0;margin-top:8px;color:var(--accent);font:inherit;font-weight:850;text-decoration:underline;text-underline-offset:3px;cursor:pointer}
.book-source-help-prominent{display:inline-flex;align-items:center;min-height:40px;margin:0 0 14px}
.book-sources-modal{position:fixed;inset:0;z-index:3300;display:grid;place-items:center;padding:20px;background:rgba(8,17,24,.62);backdrop-filter:blur(3px)}
.book-sources-modal.hidden{display:none}.book-sources-card{width:min(820px,100%);max-height:calc(100dvh - 40px);overflow:auto;background:var(--card);border-radius:22px;padding:24px;box-shadow:0 24px 70px rgba(0,0,0,.3)}
.book-source-groups{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:18px}.book-source-group{border:1px solid var(--line);border-radius:15px;padding:14px;background:var(--card)}
.book-source-group a{display:block;padding:11px 0;border-bottom:1px solid var(--line);color:inherit;text-decoration:none}.book-source-group a:last-child{border-bottom:0}.book-source-group b{display:block;color:var(--accent);margin-bottom:3px}.book-source-group span{display:block;font-size:13.5px;line-height:1.4;color:var(--muted)}
.book-source-note{margin-top:16px;background:var(--accent2)}
@media(max-width:820px){.book-sources-modal{align-items:start;padding:calc(12px + env(safe-area-inset-top)) 10px calc(12px + env(safe-area-inset-bottom));overflow:auto}.book-sources-card{max-height:none;padding:18px 14px;border-radius:18px}.book-source-groups{grid-template-columns:1fr}.book-source-group span{font-size:14.5px}}

/* V11.6.3 account clarity + recovery */
.auth-mode-tabs{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:18px 0 22px;padding:5px;background:#eef3f6;border-radius:14px}
.auth-mode-tab{border:0;border-radius:10px;padding:12px 14px;background:transparent;font:inherit;font-weight:850;cursor:pointer;color:var(--muted)}
.auth-mode-tab.on{background:#fff;color:var(--ink);box-shadow:0 2px 10px rgba(0,0,0,.08)}
.auth-card #registerFields{margin:0;padding:0;border:0}.auth-text-link{border:0;background:transparent;color:var(--accent);font:inherit;font-weight:800;text-decoration:underline;text-underline-offset:3px;padding:10px 0;cursor:pointer}.auth-message{margin-top:12px;min-height:20px;font-weight:700}
.auth-recovery-modal{position:fixed;inset:0;z-index:3500;display:grid;place-items:center;padding:18px;background:rgba(12,20,27,.78)}.auth-recovery-modal.hidden{display:none}.auth-recovery-card{position:relative;width:min(540px,100%);max-height:calc(100dvh - 36px);overflow:auto;background:#fff;border-radius:20px;padding:26px;box-shadow:0 25px 80px rgba(0,0,0,.3)}.auth-recovery-card h2{margin-top:0}.auth-recovery-card input,.auth-recovery-card select{width:100%;min-height:48px;margin:6px 0 14px}.auth-recovery-close{position:absolute;right:12px;top:10px;border:0;background:transparent;font-size:30px;line-height:1;cursor:pointer;color:var(--muted)}
@media(max-width:720px){.auth-gate{align-items:flex-start;overflow:auto;padding:calc(12px + env(safe-area-inset-top)) 10px calc(16px + env(safe-area-inset-bottom))}.auth-card{padding:20px 16px}.auth-card h1{font-size:27px}.auth-mode-tabs{position:sticky;top:0;z-index:2}.auth-recovery-modal{align-items:flex-start;padding:calc(12px + env(safe-area-inset-top)) 10px}.auth-recovery-card{max-height:none;padding:24px 16px}.auth-text-link{min-height:44px;font-size:16px}}

/* v11.6.4: visible work feedback and mobile dialog layering */
.auth-gate{z-index:24000;overflow-y:auto;overscroll-behavior:contain}
.auth-card{max-height:calc(100dvh - 32px);overflow-y:auto;overscroll-behavior:contain}
.modal:not(.profile-modal),.book-sources-modal{z-index:21000}
.working-indicator{z-index:30000;top:calc(12px + env(safe-area-inset-top));bottom:auto;border:2px solid #79cfff;max-width:min(480px,calc(100vw - 24px))}
.working-copy b{font-size:17px}.working-copy span{font-size:15px}
.working-spinner{width:28px;height:28px;min-width:28px}
.toast{z-index:31000}
.result-notice{padding:16px;margin:0 0 18px;border:2px solid #175f8d;border-radius:12px;background:#e9f5fc;color:#123d55;font-size:17px;font-weight:700}
#uploadMsg,#profileDocumentMsg{font-size:17px;font-weight:650;line-height:1.5}
[tabindex="-1"]{scroll-margin-top:170px}
@media(max-width:820px){
 .auth-gate{padding:calc(12px + env(safe-area-inset-top)) 12px calc(12px + env(safe-area-inset-bottom));align-items:flex-start}
 .auth-card{margin:auto 0;max-height:calc(100dvh - 24px - env(safe-area-inset-top) - env(safe-area-inset-bottom));width:100%}
 .working-indicator{left:12px;right:12px;max-width:none;bottom:auto}
}
@media(prefers-reduced-motion:reduce){.working-spinner{animation:none}}

/* Authentication panels keep an accessible light palette in every app theme. */
.auth-card,.auth-recovery-card{
  color-scheme:light;
  --bg:#f5f7f8;--card:#fff;--ink:#172027;--muted:#52616b;
  --line:#8796a1;--accent:#175f8d;--accent2:#eaf3f8;
  --good:#24714f;--warn:#95641f;--bad:#963f3f;
  background:var(--card);color:var(--ink);
}
.auth-card input::placeholder,.auth-recovery-card input::placeholder{
  color:var(--muted);opacity:1;
}
.auth-card :focus-visible,.auth-recovery-card :focus-visible{
  outline:3px solid var(--accent);outline-offset:3px;
}